of toledo



Apriljzz 1924.

R. LA FRANCE GLAS S FEEDER Filed March 21,, we?

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INVNTOR l .Qc/Maa l FRANCE Patented Apr. 22, 1924.

` UNITED STATES,

1,490,930 PATENT OFFICE,

BICHABD'LA FRANCE, OF TOLEDO, OHIO, ASSIGNOR T0 THE OWENS BOTTLE OI'TOLEDO, OHIO, A CORPORATION 0F OHIO. i

COMPANY,

crass Emma..

Application lied Karel; 21, 1922. Serial No. 545,572.

To all whom it may concern Be 1t known that I, RICHARD LA FRANCE,

fra citizen of the Unitedy States, residing at apparatus and moreparticularly to autothe periodic discharge o matic feeders of the typein which a vertically reciprocating plug or plunger controls moltenglass through an outlet opening in the bottom of a container.

In feeders of this ty e, it is customaryi to supply the molten g assfrom the main t furnace or tank to a forehearth or boot extension havingan outlet oening in the floor thereof. A regulating p ug projecting forthe glass on t downward through the glass toward or into the outletopening provides, with 4said opening, an` annular passage way through`which the glass issues. With the usual construction there is a tendencyfor the` glass on the side of the plun er nearest t e -furnace to flowmore free y through the outlet, takin the shorter ath, andV he frontside o the plug,

that is, y.the side lmore remote from the furnace, `to become ,more orlesschilled, so that the flow of glass in front of the plug isretarded,` due both to this chilling effect and to the more `indirectpath of flowof the glass. As a result, the issuing gob or susendedcharge of glass is unsymmetrical in shape and temperature". Theseinequalitiesare reflected to a greater orless extent in the finishedware.

An object of my invention 1s to overcome the above objections by thi.provisrn of means for securing a practically uniform y flow of glassfrom all sides of the orifice and of substantially uniform temperature.

The )referred form of construction by which t is object is attained isillustrated in the accompanying drawings, wherein:

Figure `1 is a sectional elevation of an automatic feeder constructedinaccordance with my invention,

Figure 2 isa sectional plan at the plane 0f the line IIA-II on Figure l;

Figure is a front sectional elevation of the boot at the outletforifice.

The melting tank or furnace 5 is provided with a forehearth or bootcomprising A removable clay bushing or ring 12 at y the bottom of theWell is held `in position by a supporting ring 13. The' bushing 12l 1s"provit ed with an outlet openin 14 through which the glass issues inthe orm of a suspended gob or gather 15 which is severed in the usualWay by shears 16. A

clay plug orpl'ungcr 17 carried by a yokeI 18 projects downward into theglass and is periodic discharge of glass' in a manner well nown to thoseskilled in the art.

Inaccordance with m invention, the outlet opening is arrange`quitegclose to the front wall 7 of the boot so that there is little orno floor space between said front wall and the front wall of the well orchannel 11. As sl'io'wn,the inner surface of the front wall 7 of theboot is in a plane tangent tothe front wall 'of `the well l11. Thisarrangement insures a practically uniform distribution around theplunger, of the issuing glass, and prevents ichilling and reclprocatedover the outlet to control the i stagnation of a body of glass in frontof theplunger and thus prevents a one sided flow. In other Words, therate of movement ofthe glass downward is substantially unii form on allsides of the plunger.

To further assist in producing a uniform provided withv inclined wa ls21 tapering und con verging downwardly and rearwardly and Amerging intothe floor of the boot. This `hump forms asort of dividing Wall by whichthe flow of glass is deflected to opposite sides ofthe plunger. It willbe noted that the sidesl Vof' the projection 20 extend forward lo orbevond the center line of the plug. The arrangement is such that thereis a practically uniform distribution of the flowing dass around theplug.

lilodifeations may be resorted to within tbe spirit and scope of myinvention.

'What I claim` is: y

l. ln glass feeding apparatus, the combination 'of a tank or furnace, aforehearth or boot extending therefrom, and comprising a vertical frontwall, said boot formed with a well or passageway extending downwardthrough the floor of the bootfthe front wall `o f said well beinsubstantiall in line with the inner face o the front wal of the boot, areciprocating plunger proecting downward into said boot to contro theflow of glass therefrom, and -a hump proj'ecting upward from the floorof the boot below the normal level of the glass, said humbeingimmediatel behind the pluri r an extending latera y beyond the si esurfaces of the plunger in position to deflect the flowing glass toopposite sides, of the 2. e combination vof a furnace, a foreh'earth orboot extendin therefrom, -said boot provided with 'a ischar e o eningthrough the bottom thereof, an va p unger pro'ecting downward into said#opening, sai floor being provided with a hump 'or raised portiondirectlybehind the plunger and beneaththe normal level lofthe glass, thewidth of the hump being equal toAor greater thanthe diameterofthedischarge openi'p'g. j

3. e combination of a furnace, a florehoarth or boot extendin therefrom;said boot provided with a ischarge opening n plunger.

`March, 1922. y

-throughthe bottom thereof, and aplunger and beneath the normal 4levelof the glass said hump formed with downwardly an rearwardl convergingside walls, the front he hump extending laterali beyond the .side wallsof opening.

4. T e combination of a furnace, a forehearth or boot extendintherefrom, said boot provided 'with' a ischar o ening through the bottomthereof, an a p unger projecting downward intoV said opening, said floorbeing provided with a hump or raised portion directly behind the plungerand beneath the normal level of the glass, said hump' projecting forwardat opposite the disc arge sides of thel plunger to deect and direct theflow of Signed at Toledo, in the countljiI of Lucas and State of Ohio,this 18` RICHARD, LAFRANGE,

glass ,to the forward side of the

